1842: Limited company John Cockerill.
1955: Fusion with the Ougrée-Marihaye company, after which the company was renamed Cockerill-Ougrée.
1966: Period of economic revival, "Sixties Golden delicious". Fusion with the forging mills of the Providence, which re-elected the company Cockerill-Ougrée-Providence.
1970: Absorption of Hope-Longdoz (creator of Chertal) which renamed it more simply Cockerill.